Nut-lock.



A. RAHN. NUT LOCK. APPLICATION FILED 001*. 27,1908.

Patnted Mar. 7,1911.

,TATES PATENT ornr 1 .ALB'ERT KAI-IN, F NEUSTADT, ONTARIO, CANADA;

NUT-LOCK.

986,217. Speciflcationof Letters Patent. Patented Mar, 7, 1911, iApplication filed October 27, 1908. Serial No. 459,767.

x 0 all whom it ma/y concern: jections or fingers 6. The fingers 6 areposi- Be it known that I, ALBERT RAHN, a subject of the King'of GreatBritain, residing y v A further object at Neustadt, in the Province ofOntario and Dominion of Canada,-. have invented new and usefulImprovements in Nut-Locks, of which the following is aspecification.

My invention relates to improvements in nut locks, and the object of theinvention is to devisea very simple will be incorporated for the the nutitself and thereby not be lost.

most. part an be liable to is to make the device so simple and cheapthat it will practically I add nothing to the cost of the nut.

To effect these objects I have constructed a bolt, with-a longitudinalslot and the nut with spicular projections extending from the sidesbeyond the outside face, one of said spicular projections being designedto be bent downwardly into the slot when the nut has been screwed home,as hereinafter more particularly explained.

In the accompanying drawing there has been illustrated a simple andpreferred embodiment of the invention and in which;

Figure 1 is-a perspective view illustrating the nut in locked positionupon a bolt. Fig. 2 is a transverse sectional view illustrating theimprovement secured upon the fish plate of a rail.

In the accompanying drawing the numeral 1 designates an ordinarybolthaving a squared portion. 2 adjacent its head 3 and having alongitudinally extending, channel 4; a.

. The numeral 5 designates This nut 5 is of ordinary form, beingprovided with a central threaded bore adapted to engage the threads ofthe bolt 1. The nut is preferably formed up ing with outwardly extendingspicular proform of lock, which.

its threaded portion provided with 1 engage in the groove in the thelocking nut.

in a drop forgv tioned upon each of the faces of the nut, ex tendingfrom the channel provided by bolt 1.

jections 6 onfthe body portion of the nut are ofsubstantially{triangular form and tapered at 7 their outer ends so thatthe said fingers may be bent inwardly toward the bolt when the nut is enThe combination with a. bolt having-a;

longitudinal groove in its stem, of a squareshaped nut threaded onwardly tapering resilient fingers struck up from the outer face of saidnut at its four side faces, any

It will be observed that the fingers or 'pro-' to freely bend gagedtherewith whereby one of the said between V the outer facesaid fingers,the space purpose desired, for instance,

have described issimple the said bolt, and out-,

one of said fingers being edges of the said faces ll'l an inwardlycurved or arcuate line and terminating in a lip portioni? approximatelyequalingor slighter than the width of the between the adapted to be bentinwardly in an arc to l the nut on the latter. r

In,- t' estimony whereof I affix any signature in presence o twowitnesses.

ALBERT BAHN.

Witnesses! WM; Ronnn'rson, J No; "MILLs.

bolt for looking I

